矿井顺槽及工作面个人通信系统

In this project, the statistic characteristics of UHF radio propagation in confined space is theoretically studied and a hybrid model is suggested to predict the propagation loss in this special areas.Under the guiding of the theoretical results, the pattern, the transmission and switching mode of the mine personal communication system are worked out. The standards of which are established by using the DECT regulations as reference. The product of KWT-II mine mobile device is improved and the repeater has been developed to extend the communication range in tunnels. This results in the realization of the personal communication in head entry and working face in mines.In developing a new type of spread spectrum system, the base station and the handset are designed and the PCBs of which have been made and debugged and submitted to perform validation in order to accord corresponding standards.

建立矿井中最恶劣环境顺槽及工作面的特高频个人移动通信理论并研制该区域的个人通信系统，包括无线基站、移动手机、汇接装置、无线中继器、定向小天线的研制。各装置符合煤矿安全规程所要求的隔爆性能或安全火花性能。解决顺槽及工作面的移动通信，实现矿井“大哥大”。